North Dakota breeding bird populations were surveyed in 1967 and 1992-93, comparing species frequency and abundance. The dataset identifies the five most frequent and abundant species, such as the Horned Lark and Red-winged Blackbird, and analyzes population trends linked to habitat changes. Data was collected by the CEOS_EXTRA organization, with the last update recorded in 1993.
Use Cases
- Analyze trends in species abundance and frequency for specific birds like the Horned Lark or Brown-headed Cowbird over a 25-year period.
- Model correlations between population changes for grassland-breeding birds and reported habitat alterations in the northern Great Plains.
- Compare species composition and rank order of the most abundant species, such as Chestnut-collared Longspur and Western Meadowlark, between the two survey years.
Strengths
- Data spans a 25-year period from 1967 to 1992-93.
- Provides specific metrics on the top five most frequent and abundant species, which accounted for 31-41% of the estimated statewide population.
Limitations
- Dataset is temporally stale, with no updates since 1993.
- Specific sample sizes, row counts, and column definitions are unknown.
Provenance
- Source
- CEOS_EXTRA via NASA Earthdata.
- Collection Method
- Breeding bird population surveys.
- Time Range
- 1967 to 1992-93.
- Freshness
- null
- Geography
- North Dakota, USA.